It's not crashing on missions anymore but graphics are messed up. Those are some really impressive improvements guys, i'm testing this on my shitty laptop and getting aroung 15-25fps.
I'll try to dig up my copy of Portable 3rd and see if we have similar results.

Framerate is perfect on my machine with every resolution (steady 30fps up to 4x or setting fullscreen on a 1920x1080 screen and with AA on), with only some tearing (ONLY in fullscreen).
As said previously, I succesfully loaded my save taken directly from my PSP Memory Stick (not showing in the screenshots, though).
I'll update the thread with new revisions, if I'll find some improvements.

My system is as follows:

CPU: Pentium G840
RAM: 8GB
GPU: ATI Radeon HD 5670

Last note: sorry if I mispelled something, English is not my first language ^_^

UPDATE 21/02/2013: updated screens and notes based on v0.6-653-ge72ecec
UPDATE 02/03/2013: updated screens and notes based on v0.6-837-ga0d96d2
UPDATE 11/04/2013: updated screens and notes based on v0.7-602-g4efe58a

Edit by vnctdj : Downloadable contents interest you ? Check out the thread I made here !